On April 12th, 1934, a wild storm led to a wind gust of 231 miles per hour (372 kilometers per hour) across the summit of Mount Washington. This wind speed still stands as the all-time surface wind speed observed by man record.
The tropical Cyclone Olivia hit on April 10th, 1996, where an automatic weather station on Barrow Island, Australia, registered a maximum wind gust of 408 km/h (253 mph). The wind gust was evaluated by the WMO Evaluation Panel who found that the anemometer was mechanically sound and the gust was within statistical probability and ratified the measurement in 2010. However, the wind speed was measured inside of the cyclone and not at ground level.
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